阅读说明：本技术 磁制冷模块及其制备方法 (Magnetic refrigeration module and preparation method thereof ) 是由 陈必成 于 2019-03-06 设计创作，主要内容包括：一种磁制冷模块及包含该模块的磁制冷装置和制备磁制冷模块的方法。磁制冷模块包括：膜(11),膜包括石墨烯材料和磁热材料(15),磁热材料(15)形成附着在膜(11)表面上的纳米颗粒。该结构可以方便地实现具有较高导热率和热交换率的磁制冷装置。(A magnetic refrigeration module, a magnetic refrigeration device comprising the module and a method for preparing the magnetic refrigeration module are provided. The magnetic refrigeration module includes: a membrane (11) comprising a graphene material and a magnetocaloric material (15), the magnetocaloric material (15) forming nanoparticles attached to a surface of the membrane (11). The structure can conveniently realize a magnetic refrigeration device with higher heat conductivity and heat exchange rate.)

A magnetic refrigeration module (10) comprising:

a membrane (11) comprising a graphene material; and

-a magnetocaloric material (15) forming nanoparticles attached to the surface of the membrane (11).

Magnetic refrigeration module (10) according to claim 1, wherein the nanoparticles formed by the magnetocaloric material (15) are separated from each other by defects (13) on the surface of the membrane (11).

The magnetic refrigeration module (10) according to claim 1 or 2, wherein the graphene material is reduced graphene oxide.

The magnetic refrigeration module (10) according to any of claims 1 to 3, wherein the graphene material has a thermal conductivity of at least 1000W/m-K, preferably at least 1300W/m-K, more preferably at least 1500W/m-K, particularly preferably at least 2000W/m-K.

Magnetic refrigeration module (10) according to any of claims 1 to 4, wherein the magnetocaloric material (15) is metallic gadolinium.

The magnetic refrigeration module (10) according to any of claims 1 to 5, wherein the nanoparticles have a particle size of less than 30nm, preferably less than 20nm, more preferably less than 10 nm.

The magnetic refrigeration module (10) according to any of claims 1 to 6, wherein the magnetic refrigeration module (10) comprises a construction formed by a plurality of films (11), the construction being stacked from a plurality of individual films (11) or being wound or folded from a single film (11) such that the nanoparticles are located between two adjacent films (11).

A magnetic refrigeration device (100) comprising:

-a magnetic refrigeration module (10) according to any of claims 1 to 7; and

a magnet configured to provide a magnetic field for the magnetic refrigeration module (10).

The magnetic refrigeration device (100) of claim 8, wherein the magnetic refrigeration device (100) further comprises a heat sink (40) capable of absorbing heat from the magnetic refrigeration module (10).

The magnetic refrigeration device (100) of claim 8 or 9, wherein the magnetic refrigeration device (100) further comprises a thermal interface material (60) disposed between the heat sink (40) and the magnetic refrigeration module (10).

A method of making a magnetic refrigeration module (10), the method comprising the steps of:

providing a membrane (11) comprising a graphene material;

-distributing a magnetocaloric material (15) on a surface of said membrane (11);

heating the magnetocaloric material (15) to a molten state; and

cooling the magnetocaloric material (15) and the membrane (11) such that the magnetocaloric material (15) forms nanoparticles on the surface of the membrane (11).

A method according to claim 9, wherein the nanoparticles formed by the magnetocaloric material (15) are separated from each other by defects (13) on the surface of the membrane (11).